Hard to really make out what adjustments he's made just from seeing him hit the pads IMO but I think we will see a new Amir Khan in this fight, if he can use that speed properly and remember he doesn't have Jake Lamotta's chin he should be fine.

Laz, Rico, in honour of you two gentleman I shall be cheering for Khan in this fight

Yeah, not much to take from those vids, but you can tell Virgil is tryna' make him more flat-footed and settled - something which Roach was trying to drill in his head. More emphasis is clearly there on defence, with that Ward pad-routine that Khan is looking slightly rusty with at the moment and will need more time to find his feet. Also, he seems to have him working on fighting whilst going backwards (5:30 in the second vid); trying a variety of shots whilst pivoting and creating angles.